[Statlist] Next talk: Friday, April 1, 2011, with Nicolas Vayatis

[Cecilia Rey]

ETH and University of Zurich

Proff. P. Buehlmann -  R. Furrer - L. Held - H.R. Kuensch -
M. Maathuis -  S. van de Geer - M. Wolf


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We are glad to announce the following talk
Friday, April 1, 2011, 15.15 HG G 19.1

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  by Nicolas Vayatis, Centre de Mathématiques et de leurs Applications,
Ecole Normale Supérieure de Cachan (CMLA de Cachan)


Titel:
Nonparametric scoring and ranking trees

Abstract:
In a world of overwhelming information, ranking has become one of the  
most critical tasks for high level data processing. In the talk, we  
focus on the problem of learning to rank high dimensional vectors  
based on past data with binary feedback, say positive and negative.  
 From a mathematical point of view, the problem is to find a real- 
valued scoring function which leads to the highest possible density of  
positive observations among the highest values of the scoring  
function. We discuss the nature of optimal scoring functions,  
performance measures, statistical aspects and practical algorithms  
inspired from decision trees and random forests.

The abstract is also to be found here:  http://stat.ethz.ch/events/ 
index.

-- 
ETH Zürich
Seminar für Statistik
Cecilia Rey-Lutz, HG G10.3
Rämistrasse 101
CH-8092 Zurich		                      	
mail: rey at stat.math.ethz.ch    	  		
phone: +41 44 632 3438/fax: +41 44 632 1228


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